You can use Boxoft PDF to Flipbook to add password to protect your flipbook.
What is Boxoft PDF to Flipbook?
Boxoft PDF to Flipbook is high security software for you to convert PDF to flash flipbook with stunning page flipping effect. It enables you many ways to brand your flipbook, and protect it from others illegally using. You can add watermark on each flash page, add own logo on flipbook and even set password for protect your flipbook.
How to add password in Boxoft PDF to Flipbook?Step1: Launch Boxoft PDF to Flipbook program, choose a flash template we offerd, and then import PDF from your computer;
Step2: Find “Security Settings” in Design Settings (Design Setting ->Flash Control Settings->Security Settings). Click the “…” icon to enter into Flash Security Config interface.
Step3: Add Single Password for your flipbook pages, there are two options for you:Step4: Click "ok" button, and apply change the flipbook have added password security.